Scoliosis and vertebral anomalies: Additional abnormal phenotypes associated with chromosome 16p11.2 rearrangement

Hussam Al-Kateb, Geetika Khanna, Isabel Filges, Natalie Hauser, Dorothy K. Grange, Joseph Shen, Christopher D. Smyser, Shashikant Kulkarni, Marwan Shinawi

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

The typical chromosome 16p11.2 rearrangements are estimated to occur at a frequency of approximately 0.6% of all samples tested clinically and have been identified as a major cause of autism spectrum disorders, developmental delay, behavioral abnormalities, and seizures. Careful examination of patients with these rearrangements revealed association with abnormal head size, obesity, dysmorphism, and congenital abnormalities. In this report, we extend this list of phenotypic abnormalities to include scoliosis and vertebral anomalies. We present detailed characterization of phenotypic and radiological data of 10 new patients, nine with the 16p11.2 deletion and one with the duplication within the coordinates chr16:29,366,195 and 30,306,956 (hg19) with a minimal size of 555kb. We discuss the phenotypical and radiological findings in our patients and review 5 previously reported patients with 16p11.2 rearrangement and similar skeletal abnormalities. Our data suggest that patients with the recurrent 16p11.2 rearrangement have increased incidence of scoliosis and vertebral anomalies. However, additional studies are required to confirm this observation and to establish the incidence of these anomalies. We discuss the potential implications of our findings on the diagnosis, surveillance and genetic counseling of patients with 16p11.2 rearrangement.

Original languageEnglish
Pages (from-to)1118-1126
Number of pages9
JournalAmerican Journal of Medical Genetics, Part A
Volume164
Issue number5
DOIs
StatePublished - May 2014

Keywords

  • 16p11.2 rearrangement
  • Deletion
  • Duplication
  • Phenotype
  • Scoliosis
  • Vertebral anomalies

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